Well packer



Jan. 27, 1931. c. H. REYNOLDS WELL PACKER Filed July 23, 1928 4 5 7 M 8 J F w r L I147 1 1 a .r 7 a? PM U H. m F2 6 H Patented Jan. 27, 1931 T OFFICE CHARLES H. REYNOLDS, 01! HOUSTON, TEXAS WELL PACKEB Application filed July 23, 1928. Serial No. 294,881.

This invention relates to new and useful improvements in a well packer.

One object of the invention is to provide a packer or plug of the character described 6 whereby a well bore may be securely closed to prevent water from rising therein from beneath. Another object of the invention is to provide an apparatus of therharacter described 1 embodying an expansible sleeve like packing element, means adapted to expand said element, and means for applying fluid pressure to said expanding means, in the bore to actuate the expanding means to efi'ect the expansion of the packing element against the walls of the bore to completely bridge and close the cross sectional area thereof;

With the above and other objects in View this invention has particular relation to certain novel features of construction, opera tion and arrangement of parts, an example of which is given in this-specification and illustrated in the accompanying drawings, wherein Figure 1 shows a vertical sectional view of the device and,

Figure 2 shows a cross sectional View taken on the line 22 of Figure 1.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 designates the walls of the well bore in the present instance the same being a casing set in the well.

whose lower end is downwardly flared forming a lower expander, 3. On the mandrel there is a sleeve like packing elementas 4, which may be formed of lead, other soft '40 metal, fabric, or any other suitable expanoutwardly flared upper end of the packing element 4. Fitted onto the mandrel and resting on the expander 5 there is a nipple 6 whose lower end is reduced and fitted in said expander 5 and the lower end of the cylinder The packer comprises a solid mandrel 2 7 is screwed onto, or otherwise attached to said nipple. This cylinder may extend any desired distance above the nipple. Fitted closely within the cylinder and mounted on sald nipple there is an annular packing ring 8 which also closely surrounds said mandrel. The upper end of the mandrel is reduced forming an external annular shoulder 9 and on this shoulder is a supporting ring 10 which'supports the packing ring 11. The packing ring 11 fits closely in the cylinder 7 and closely surrounding the mandrel and is secured in place by means of the washer 12 and lock nut 13 the latter of which is screwed onto the mandrel above said washer.

Attached to the upper end of the mandrel, by left hand threads, there isthe tubing 14 ,which extends to the ground surface. A conduit 15 leads down through the mandrel, from its upper end, and is turned laterally and enters the chamber 16, between the lower and upper packing rings 8 and 11. Surrounding and spaced from the mandrel, and resting on the acking ring 8, there is a spacer ring, 17 wh1ch prevents the ring 8 from, at

any time, moving into position to close the outlet of the conduit 15. But for this'ring 17, in lowering the packer into the well, the packing element 4, or expander 5, might hang on a projection in. the well and cause the mandrel to move downwardly, relative tosaid ring 8 so that said outlet would be closed. i

In operation the device is assembled as shown and then lowered into the well through the instrumentality of the tubing 14. When the packer is at the desired place fluid, under pressure, is forced down through the tubing 14 into the chamber 16 and this pressure will force the upper expander 5 downwardly relative to the lower expander 3 and said expanders, moving, relatlvely, toward each other will operate to expand the element 4 against the casing 1, or other walls of the bore, and form a fluid tight joint therewith;

When the packer is set the tubing 14 may be turned to the right and thus detached from the mandrel, and withdrawn.

While I have shown what I now conside the preferred form of the invention it is obvious that mechanical changes may be made therein and equivalents substituted for the parts shown and I reserve the right to make such changes and substitutions as may be found desirable within the scope of the appended claims.

What I claim is 1. A packer for wells including a solid mandrel having an expander fixed thereto and having a channel leading downwardly from the upper end terminating in a lateral port, a movable expander on said mandrel, an expansible sleeve like element around the mandrel between the expanders, means operatable by fluid pressure and effective to actuate said expanders against said element to expand the same, said means including a piston on the mandrel above said port, and a tube attached to the upper end of the mandrel through which fluid under pressure may be forced through said channel and port.

2. A packer for wells including a solid mandrel formed with an expander, an expansible element on the mandrel one end of which abuts said expander, a movable expander around the mandrel abutting the other end of said element, a cylinder on the movable expander, a piston attached to the mandrel and located in said cylinder, and forming a chamber in the cylinder between the plunger and the opposing end of the cylinder, said mandrel having a fluid channel provided with a port into said chamber through which fluid, under pressure may be introduced into said chamber, below said piston, to actuate the mandrel and efiect relative movement of said expanders in opposite directions against said element and means at the upper end of the mandrel for attaching a fluid pressure pipe thereto through which pressure fluid may be conducted into said channel.

3. A well packer including a solid mandrel, an expansible element thereon, expanders on the mandrel engaging the ends of said element, a cylinder, packing rings in the cylinder one of said rings being fixed to the mandrel and forming a piston and the other being fitted around said mandrel, said packing rings being spaced apart to form a chamber between them, said expander having a channel leading downwardly from the upper end thereof and entering said chamber beneath said piston, a tube connected to the upper end of said mandrel for introducing fluid, under pressure through said channel into said chamber and a spacer located between said packing rings.

4. A well packer including a mandrel, an expansible element thereon, expanders on the mandrel engaging against the ends of said element, a cylinder, packing rings in the cylinder one of said rings being fixed to the mandrel and forming a piston in the cylinder and the other being fitted around said mandrel, said packing rings being spaced.

chamber beneath said piston, means for introducing fluid, under pressure, into said chamber, comprising a tubing detachably connected to the upper end of said mandrel.

5. A well packer including a solid mandrel having a channel leading downwardly from the upper end thereof and terminating in a lateral port, an expansible packing element around the mandrel, expanders on the mandrel adapted to engage against the ends of said packing to expand the same, a cylinder around the upper end of the mandrel whose lower end is closed, a piston on the mandrel in the cylinder, above said port, said port opening into the chamber in the cylinder and means at the upper end of the mandrel through which a conducting pipe for fluid under pressure may be conducted to said channel.

In testimony whereof I have signed my name to this specification.

CHARLES H. REYNOLDS. 

